JezK
Edit File: stack-traces-2.js
// Copyright 2011 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --builtins-in-stack-traces // Poisonous object that throws a reference error if attempted converted to // a primitive values. var thrower = { valueOf: function() { FAIL; }, toString: function() { FAIL; } }; // Tests that a native constructor function is included in the // stack trace. function testTraceNativeConstructor(nativeFunc) { var nativeFuncName = nativeFunc.name; try { new nativeFunc(thrower); assertUnreachable(nativeFuncName); } catch (e) { assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName); } } // Tests that a native conversion function is included in the // stack trace. function testTraceNativeConversion(nativeFunc) { var nativeFuncName = nativeFunc.name; try { nativeFunc(thrower); assertUnreachable(nativeFuncName); } catch (e) { assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName); } } function testNotOmittedBuiltin(throwing, included) { try { throwing(); assertUnreachable(included); } catch (e) { assertTrue(e.stack.indexOf(included) >= 0, included); } } testTraceNativeConversion(String); // Does ToString on argument. testTraceNativeConversion(Number); // Does ToNumber on argument. testTraceNativeConversion(RegExp); // Does ToString on argument. testTraceNativeConstructor(String); // Does ToString on argument. testTraceNativeConstructor(Number); // Does ToNumber on argument. testTraceNativeConstructor(RegExp); // Does ToString on argument. testTraceNativeConstructor(Date); // Does ToNumber on argument. // QuickSort has builtins object as receiver, and is non-native // builtin. Should not be omitted with the --builtins-in-stack-traces flag. testNotOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) { (b < a) - (a < b); }); }, "QuickSort"); // Not omitted even though ADD from runtime.js is a non-native builtin. testNotOmittedBuiltin(function(){ thrower + 2; }, "ADD");